Mounting for rock drills



Sept. 15, 1931. c. c. HANSEN I MOUNTING FOR ROCK DRILLs Filed Oct. 9, 1928 Patented Sept. 15, 1931 i f UNITED 'i STATES PATENT- OFFICE CHARLES rC. HANSEN, F EASTON, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RAND t ,g

COMPANY, 02E" JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY MOUNTING FOR ROCK DRILLS Application filed October 9,'1928. Serial No. 311,393.

This invention relatesto rock drills, but more particularly to a mounting for a rock drill to be used in breaking a thick concrete or. brick wall under circumstances that are '5 such that rapidity inmaking the break is the most important consideration, as in fighting a fire.

One object of this invention is to provide a rugged compact and simple device to hold a rock drill steadily under conditions in which the ordinary quarry or mining mounting would be unsuitable.

kAnother object is to provide a rock drill mounting which maybe quickly brought to Y the working position and set up in compara tively restricted quarters.

` Theselobject-s among others are obtained y by the device illustratedin the drawings, in

which, y

Figure 1 is a longitudinal view, partly in section, of'a rock drill, rock drill mounting and tracks vfor the mounting.

` Figure 2 is a top, plan view of the device shown in Figure 1, and

of drilling a wall vto form a break therein.

Referring more particularly to the drawings, 10 designates awall which is to be pierced. Timbers 11 are laid parallel to the face of the wall 10. A frame 12 formed of two long parallel planks `13, held together by cross pieces 14C and having guard rails 15 secured to the outside edges of the planks 13 is placed transversely on the timbers 11.

kA pair of artillery wheels 16, preferably yhaving rubber' tires 17 are mounted on an axle 18 and held in place by nuts 19. A pair ofsteel channelbeams 20, are secured tothe axley 18 by means of bolts 21 which extend through` the axle. The channel beams 2O are, in this instance, bent slightly in a vertical plane. 'At the end of thebeams remote from the axle 18, aksecond pair of wheels 22 are mounted on an axle 23, the axle v23 being secured to the frame or beams 20 by means .0f bolts 24%. The channel beams 2O and the wheels 22 forma trail for the mounting and y permit'it to be moved from place to place without tilting. A C I'Oss beam 25 is used to give additional rwindlass is provided with a crank 33.

Figure3 is a diagram showing the methody rigidity'to the mounting. A saddle 26 is secured to the axle 18 by bolts 27 extending through apertures in the axle. The saddle 26 is so formed that a rock drill 28 of standard design may be fastened thereto by bolts 29. Rearwardly of the rock drill 28, a windlass` 30, having bearings 31 is secured to the channel beams 20 bymeans of bolts 32. The A cable 34 runs from the windlass to a ring bolt 35 which is'iixed to the forwardmost crosspiece 14.

Inthe operation of the device, assuming thatfthe wall 10 is to be pierced in order that a lire hose may be brought to'play on a fire whichis inf'progress on the left hand side of the wall as viewedin the drawings; the beams 11 are placed as shown on the floor 36. The planks 13vwith the guard rails 15 and the crosspieces 14 are then laid on the beams 11 thus forming a pair of tracks for the wheels 16 and 22. The rock drill 28 together with the mounting is then run onto the track by means of a ramp or inclined plane (not shown).

When the rock drill and mounting are in place a drill steel 37, capable of drilling a hole of large diameter is inserted in the front head 38, of the rock drill 28. Pressure fluid is admitted to the rock drill from a source of supply (not shown) through the hose 39, of which only a part is shown. As the drill steel cuts into the wall, the windlass 30 is v operated by turning the crank 33 thus drawfire immediately. After the upper row of holes has been vdrilled the drill steel 37 is removed and a broaching steel (not shown) inserted in its place. The web of material remaining between the holes is cut away by block 46.v Theholeis noW large enough tol Nt .i

the broaching steel or a separate hand held drill may be used ,to remove this material. The timbers 11 are then .removed and the tracks 12 dropped a corresponding amount. The holes 43, 44 and 4:5.are then drilled and theY material vbetween them removed by broaching, thus permitting ther removal of the permit the passage of one or more hose lines or if need be the firemen may passk through the hole.

I claim: v

A mounting for rock drills comprising a pair of Wheels, an axle operatively connecting the Wheels spaced one from the other, a pair of inclined members seated v'vith one end upon the axle and extending therefrom in the form ,of a trail, bolts extending through the members and the axle tosecure the members to the axle, a saddle seated on the axle between said members, bolts extending throughthe'saddle and the axle 4.to secure the saddle ixedly to the axle, a rock drill mountedl on the saddle and being xedly se,- eured thereto, a second pair of Wheels at the end of the trial distant from the irst, a Windlass on the trail intermediate the first and `second pairs of wheels, a cable extending Vfrom the Windlass, and .securing means forV the cable positioned beyond the first Wheels whereby the mounting and rock'drill vare ino-ved when the Windlass is operated. v

In testimony whereof I have signed this specification. v

CHARLES C. HANSEN. 

